chore(deps): bump org.jetbrains.kotlinx:kotlinx-datetime

Bumps [org.jetbrains.kotlinx:kotlinx-datetime](https://github.com/Kotlin/kotlinx-datetime) from 0.7.1 to 0.7.1-0.6.x-compat.
- [Release notes](https://github.com/Kotlin/kotlinx-datetime/releases)
- [Changelog](https://github.com/Kotlin/kotlinx-datetime/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx-datetime@v0.7.1...v0.7.1-0.6.x-compat)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-datetime
  dependency-version: 0.7.1-0.6.x-compat
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -26,7 +26,7 @@ kotlin-dokka                   = "2.1.0"
 kotlinx-io                     = "0.8.2"
 kotlinx-atomicfu               = "0.30.0-beta"
 kotlinx-coroutines             = "1.10.2"
-kotlinx-datetime               = "0.7.1"
+kotlinx-datetime               = "0.7.1-0.6.x-compat"
 kotlinx-datetime-zoneinfo      = "2025b-spi.0.7.1"
 kotlinx-serialization          = "1.9.0"
 kotlinx-rpc                    = "0.10.1"